Adjustment - Kenwood X-W320 Service Manual

X-W320
No. ITEM
Unless otherwise specified : each ; switch should be set as follows :
TAPE : NORMAL, DOLBY : OFF, INPUT : LINE
I.Cassette mechanism section (REC/PB head adjustment)
Demagnetization
[1]
and cleaning
REC/PB head
[2]
azimuth
II. Printed circuit board adjustment. Note : First perform the high-speed adjustment.
Tape HIGH
speed
(A DECK)
NOR.
<1>
Tape HIGH
speed
(B DECK)
NOR.
Playback level
(A DECK)
<2>
Playback level
(B DECK)
<3> MPX filter
<5> Bias current
<4> Recording level
SYSTEM CONNECTIONS
LINE
REC PLAY
SYSTEM
IN OUT CONTROL
L
R
AG
AC voltmeter
(A)
6

ADJUSTMENT

INPUT OUTPUT
SETTINGS SETTINGS
Power OFF, demagnetization,
– –
MTT-114,
TCC-153 (B)
SCC-1727
1. Playback a TEST TAPE
2. Connect collector (Q404)/
MTT-111 TP201
3. Disconnect a 1kΩ.
TCC-100 or
SCC-1727 TP202
1. Playback a TEST TAPE.
3kHz, -4dB (B)
2. Connect collector (Q508)
3. Disconnect a 1kΩ.
TCC-130
REC LEVEL 0dB
19kHz, -20dB
DOLBY B MODE
• Adjust the REC LEVEL vol-
TP201(L)
1kHz,15mV
TP202(R)
10kHz,15mV • Record 1kHz and 10kHz alter-
(B)
• Rewind and playback record-
• Adjust the REC LEVEL vol-
1kHz, 200mV
• Record 1kHz.
•
REC/PB UNIT
1
2
GND
TP201(L)
TP202(R)
AC 220 -
AC 110 -
240V
120V
AC voltmeter
Oscilloscope
Frequency counter
(B)
CASSETTE TAPE ALIGNMENT
DECK SETTINGS
cleaning play
PLAY
HIGH VR401
R404 to GND via1kΩ.
NOR. VR402
HIGH VR501
/R524 to GND via 1kΩ.
NOR. VR502
PLAY
ume so that the recording
monitor output becomes
15mV at 1kHz.
nately.
ed signal.
ume so that the recording
monitor output becomes
200mv at 1kHz.
Rewind and playback record-
ed signal.
(a) AZIMUTH ADJUSTMENT
SCREW
ALIGN FOR
POINTS
0dBs=0.775V
Demagnetize the REC /PB
REC/PB
head by head eraser.
head, erase
Clean the REC/PB head,
head. cap-
erase head capstan and
stan, pinch
pinch roller with a cotton
roller
swab immersed in alcohol.
Maximize the output and
Azimuth
adjust so that the Lis-
adjustment
sajous figure nears a line
screw.
slanted 45°.
Adjust so that the frequen-
cy is 6kHz(HIGH), 3kHz
(NOR) at the tape center.
VR403(L)
VR404(R)
775mV
VR503(L)
VR504(R)
L 203(L)
775mV ± 2dB
L 204(R)
VR101(L)
15mV ±1dB
VR102(R)
Adjust the variable resis-
VR201(L) tors so that a playback
level of 200mV ±0.5dB is
VR202(R)
obtained.
TAPE SPEED(HIGH)
TEST POINT
(A DECK)
Q404
R404
1KΩ
To be added
a 1kΩ.
FIG.
(a)
(B DECK)
R524
VR502
VR501
1KΩ